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The Keystone Gold-Copper District, Medicine Bow Mountains, Southeastern Wyoming
May 2002 by W. Dan Hausel
The Keystone district includes a group of mineralized shear zones and veins that are associated with the Keystone Quartz Diorite in the Medicine Bow Mountains of southwestern Wyoming. Gold production from this district is unknown, although some estimates suggest that 7,500 to more than 12,000 ounces were produced.Canadian Arrow Tries Different Approach
Timmins, Ontario, is a fascinating city for miners to observe. During periods of strong mining activity, Timmins prospers, home values rise, retail activity increases, vacant office spaces fill up and so forth. However, during periods of...
Golden Age of Gold Dredges
Over one hundred years ago, gold mining in California saw a radically new method tried out in the major rivers of the Central Valley. Large gold dredges floated lazily but noisily on the waters, bringing up the rich gravel from deep below. With none of today’s environmental restrictions on such methods, the landscape was reworked into a maze of patterns along the rivers.
Placer & Lode Gold Deposits
Even though there are many varieties of gold deposits, prospectors often refer to two general types: placer and lode. Some lode examples include...
The Goldfield Mining District, Nevada—Part II
The majority of the gold produced in Goldfield has come from ores that are close enough to the surface to be oxidized by the air. This oxidized ore is normally a soft, shattered, earthy material usually stained yellow to brown by oxides of iron.
Addressing EPA Overreach: What Dredgers Need to Know
BC Premier Heralds "Golden Decade" in Forestry and Mining
British Columbia is poised for a “golden decade” in forestry and mining, Premier Gordon Campbell says.
Where to Prospect for Gold in Colorado
Colorado is one of the more productive states when it comes to gold, ranking third, behind Nevada and California. The majority of the gold deposits are confined to a northeast-trending belt known as the Colorado Mineral Belt...
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